Concrete roadway



Aug, 4, 1925.

- J. PETERS CONCRETE ROADWAY Filed Aug. 21, 1922 lnvenfor- John flan?"P666 3 Patented Aug. 4, 1925.

UNITED STATES JOHN, nanny PETERS, or nARLINGnUnsT, NEAR SYDNEY, nEwscorn WALES, AUSTRALIA.

CONCRETE ROADWAY.

Application filed August 21, 1922. Serial No. 583,1 26.

To all whom it may concern:

Be it known that I, JOHN HENRY PETERS, subject of the King of GreatBritain and Ireland, residing at Bosebank Avenue, Darlinghurst, nearSydney, New South IVales, Australia, have invented certain new anduseful Improvements in Concrete Roadways, of which the following is aspecification.

This invention relates to concrete roads, and it has for one object toexpedite and cheapen the work of road building and to procure maximumsolidity and permanence in the road structure.

The accompanying drawing is a sectional perspective view of a concreteroad in course of construction according to this invention.

According to the present invention, a roadway is constructed whichincludes a foundation or sub-grade upon which a roadway proper isplaced. This roadway consists of blocks of stone, brick, or burnt claywhich are preferably generally square or rectangular and spaced slightlyapart from each other and formed into an essentially monolithic roadbedby pouring upon them concrete which fills the spaces between them andforms an inverted kerb along the sides of the road, and covers the topsof the stones or other blocks. Reinforcing of any suitable type may beput in place so as to be imbedded in the concrete.

A is a subsoil underbed which is made plane and solid by filling and byramming and rolling. B are heavy blocks of stone which approximate torectangular shape and have their length disposed vertically. It is verydesirable that they should be ap proximately equal in length and placedin close order upon the underbed A. C are the interstitial spacesbetween the respective stone blocks, and M are vacant places equallyspaced apart in checkerboard order. D is the concrete paving or toppingwhich is laid over the stones B, and N is cement grouting in theinterstitial spaces C. O are the inverted kerbs. The stones B, paving D,grouting N, and kerbs 0 form a monolith. H are fence; forms whichcontain the concrete during emplacement and form rails for thestricklers which are swept over the emplaced concrete to level andsurface it; these fences are removed when the work is set. J are theroad flanks which may be macadamized or gravelled. K are reinforcingbars embedded in the kerbs O, and L is reinforcing metal overlying thestones B. The reinforcement L when used in the construction is laid overthe stones B before the concrete surfacing is placed on them.

In forming the road of my invention the ground is preferably graded, andit may be rammed or rolled. Upon the prepared subsurface, a singlecourse of slabs, lumps or blocks of stone of generally rectangular shapeis set. The stones are preferably rough hewn. Concrete is then pouredover the stones, filling the spaces between them. Concrete is applied insuflicient quantity so as to form a layer over the tops of the stone.Preferably it should have a thickness of two to six inches, and in usualpractice this will be about one-quarter of the total depth of the road.Reinforcing of expanded metal or any other type may be placed betweenthe rows of stones or over them or both.

Although I have shown an operative in vention, still it will be obviousthat many changes might be made in size, shape and arrangement of partswithout departing materially from the spirit of my invention; and Iwish, therefore, that my showing be taken as in a sense diagrammatic.Especially it will be obvious that the details of size and shape of theblocks, the details of the reinforcing used and means of application maybe widely varied without departing from the spirit of my invention.

l/Vhat I claim as my invention and dcsire to secure by Letters Patentis 1. A concrete road containing heavy stone blocks on a sub-grade,spaced apart and with vacant spaces at uniform intervals and a paving offine aggregate concrete on and between said blocks and filling saidvacant spaces whereby said spaces filled with concrete form piers unitedto the structure.

2. A concrete road containing heavy stone blocks on a sub-grade, spacedapart and with vacant spaces at uniform intervals and a paving of fineaggregate concrete on and between said blocks and filling said vacantspaces whereby said spaces filled with concrete form piers united to thestructure in combination with lateral extensions along the side of thestone bed which form inverted curbs united to the main concretestructure.

3. A concrete road containing heavy stone blocks on a sub-grade, spacedapart and with vacant spaces at uniform intervals and a paving of fineaggregate concrete on and between said blocks and filling said vacantspaces whereby said spaces filled with concrete form piers united to thestructure in combination wlth lateral extensionsalong the side of thestone bed which form in:

verted curbs united to the main concrete structure, and metallicreinforcings positioned on top of the stones and imbedded Within theconcrete.

In testimony whereof I aflix my signa' ture.

JOHN HENRY PETERS.

